300031020 has 96 divisors (see below), whose sum is σ = 963594240. Its totient is φ = 77423040.

The previous prime is 300030971. The next prime is 300031027. The reversal of 300031020 is 20130003.

It is a happy number.

It is a super-2 number, since 2×300031020² = 180037225924480800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 300030993 and 300031011.

It is not an unprimeable number, because it can be changed into a prime (300031027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7779 + ... + 25701.

It is an arithmetic number, because the mean of its divisors is an integer number (10037440).

Almost surely, 2^300031020 is an apocalyptic number.

300031020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 300031020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (481797120).

300031020 is an abundant number, since it is smaller than the sum of its proper divisors (663563220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

300031020 is a wasteful number, since it uses less digits than its factorization.

300031020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17972 (or 17964 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 300031020 is about 17321.4035228096. The cubic root of 300031020 is about 669.4560224093.

Adding to 300031020 its reverse (20130003), we get a palindrome (320161023).

The spelling of 300031020 in words is "three hundred million, thirty-one thousand, twenty".